Where People Go Wrong
The most common mistake is treating a replacement like a swap - same size, same style, done. With housing stock this old across West Allis and the inner-ring suburbs around it, that assumption fails often enough to matter. People also under-spec for the climate. This is a cold, severe winter region, and a door rated for a mild climate - thin steel, no thermal break, minimal weatherstripping - will perform fine in October and fight you by January. The other mistake is ignoring the opener and track while focusing only on the door panel. If your house is from the 1960s or 70s, the track hardware and header clearance were sized for the door that's coming out, not necessarily the one going in. Skipping that check to save time up front usually means a callback once the new door doesn't seat right against the stop, or the opener strains against a slightly different weight and balance point than the old one.
What Local Conditions Do
Cold, severe winters put real stress on a garage door, and it shows up differently depending on what's behind the panel. Steel contracts in deep cold, and on an older, uninsulated door from a house built in the 1960s or 70s, that contraction plus moisture cycling is what cracks weatherstripping and lets a bottom seal go brittle years before it should. Springs feel the cold too - cold steel is less forgiving, and a torsion spring that's been fine for a decade can let go on the first hard cold snap of the season. None of this is unique to one block of West Allis; it's the same physics whether the house is near down toward. What changes is the door's age and build, and that's set by when the house went up, which is exactly why 1938-2000 construction with that much 1960s-70s stock means a wide spread of door conditions out there, not one standard fix.
